LU , Y.; FEHRING, H. . When and Why EFL Teachers Use L1?. International Journal of Learning, Teaching and Educational Research, [S. l.], v. 14, n. 2, p. 151–162, 2015. Disponível em: https://ijlter.myres.net/index.php/ijlter/article/view/994. Acesso em: 21 jun. 2026.